A difference of opinion over carbon cap-and-trade systems is at the heart of debate over two proposed energy bills; Mozilla releases a Firefox 3 update; Microsoft unveils its answer to Google AdSense; and Second Life gets an adult-oriented continent.

CNET News editor Michelle Meyers talks with reporter Stephanie Condon about how a difference of opinion over carbon cap-and-trade systems is complicating the debate over two proposed energy bills. Also in this podcast: Mozilla releases a Firefox 3 update; Microsoft unveils its answer to Google AdSense; and Second Life gets a new continent devoted exclusively to adult-oriented content. Get those stories and more on today's daily news podcast.